User photographs can still be found on many social networking sites even after people have deleted them, Cambridge University researchers have said.
They put photos on 16 popular websites – noting the web addresses where the images were stored – and deleted them.
The team said it was able to find them on seven sites – including Facebook – using the direct addresses, even after the photos appeared to have gone.
Facebook says deleted photos are removed from its servers “immediately”.
The Cambridge University researchers said special photo-sharing sites, such as Flickr and Google’s Picasa, did better and Microsoft’s Windows Live Spaces removed the photos instantly.